Churn-cover



(No Model.)

A. B. GOSBY.

GHURN COVER.

,71-0. Patented Peb.- 7, 1888."

IINVENTOR:

ATTORNEYS.

mun -1pm. Wuhinglnn. n c.

UNITED STATES PATENT" OFFICE.

ANDERSON B. OOSBY, OF RICHMOND, VIRGINIA.

CHURN-COVER.

SPECIPICATION forming part of Letters Patent No. 377,710, dated February'7, 1888.

Application flled'December 21, 1887. Serial No. 258,625. (No model.)

To all whom it may concern:

Be itknown that I, ANDERSON 13. Comm, of Richmond, in the county ofHenrico and State of Virginia, have invented a new and usefulImprovement in Churn-Covers, of which the following is a specification.

My invention relates to that class of churncovers in which a marginalring with hookshaped lugs is fixed to the upper edge of the churn-body,and a disk-shaped cover is provided with a set of radial leversprojecting beyond the edge of the disk for engagement with said lugs,the said levers being arranged to work in a vertical plane (andsimultaneously) by the same cam or screw plate at the center, so as totighten under the lugs, and thus hold the cover firmly down.

My invention consists in the peculiar construction of a screw-cup, incombination with its inclosing-shell and the levers, as will behereinafter fully described.

Figure l is a plan View. Fig; 2 is a-section through 00 as. Fig. 3 is anenlarged section through 3 3 Fig. 4, an enlarged section through z z,and Fig. 5 adetail in perspectiveof one of the levers.

In the drawings, A represents the marginal metal ring, which is screwedor otherwise fastened to the top edge of the churn-body. Thisring hasfour upwardly-projecting hookshaped lugs, a, cast upon it, and has alsoits inner edge slightly raised to form a bead, b, upon which the woodencover B fits and makes a tight joint.

O is another marginal ring, which is fast ened to the edge of the coverB, and is provided with four fulcrum-seats, c, which are in the natureof lugs,with inverted-T-shaped or undercut slots.

D are the levers, which are four in number and are arranged radially.These levers at their fulcrum-point have ribs d d on their sides, whichfit beneath the overhanging edges of the fulcrum-seats and prevent thelevers from being lifted out, but at the same time allow the levers tohe slipped endwise into the fulcrum-seats and to have therein a slightoscillatory motion about the fulcrum -point.

The inner ends of the levers extend intoouter periphery with deepscrew-threads f,

which receive the inner ends of the levers, which latter havecross-heads g on them, to

prevent the levers from passing endwise out through the slots 6 in theencompassing-shell. Thescrew-cup is retained in the shell by ashoulder-bolt, G, which forms an axis for the screw-cup to turn upon.The shoulder h of the bolt forms a hearing, by which the nut t on thelower side of the cover is made to clamp the bolt without bringing anycramping strain on the screw-cup, allowing the latter perfect freedom ofmotion. This screwcup has four independent'parallel threadsone for eachlever-the object in multiplying the threads being to bring all the innerends of the levers in the same horizontal plane. To the upper portion ofthe screw-cup is attached or cast one or more handles or lugs, k, bywhich it is turned.

To operate the cover, it is applied to the ring on the churn and thecover slightly turned, so as to bring the outer ends of the leversbeneath the hooks on the churn-body. The screw-cup is now turned aboutits vertical axis, and its thread causes the inner ends of the lever tobe simultaneously depressed and the outer ends beneath the hooks to beraised, which causes the cover to be tightly pressed down upon the churnat four equidistantpoint's.

adjusting cam or screw at the center for opcrating them; but

What I claim is- 1. The combination,,with the cover bearing a ring withundercut fulcrum-seats a, of the levers D, having ribs 01 d andcross-head g, the vertically-slotted shell E, and the screwcup F,arranged about a vertical axis within the shell and having peripheralthreads adapted to receive the cross-heads of the levers, substantiallyas and for the purpose described.

2. The combination of the marginal ring A with hookshaped lugs a andbead b, the cover with marginal ringO, having undercut fulcrum-slots,the levers D, with ribs d and cross-head g, the vertically-slottedretainingshell E, the'screw-cup F, and the axial shout der-bolt G,substantially as and for the purpose described. Y

ANDERSON B. COSBY.

Witnesses: I

LoUIs RAWLINGS, Guns. A. Ross.

